Victron Filax 2 Automatic Transfer Switch 110V/120V | SDFI0000110

The Victron Filax 2 is an automatic transfer switch built for systems that need fast, dependable switching between two AC sources. It suits off-grid, marine and backup power installations where an uninterrupted supply to connected loads matters. This variant covers 110V/50Hz and 120V/60Hz input configurations, so it fits a range of international voltage standards.

Key features of the Filax 2 transfer switch

• Automatic switching, transfers the load between two AC sources with no manual intervention.
• Dual voltage support, works with 110V/50Hz and 120V/60Hz supplies.
• CE certified, assessed against applicable European safety and electromagnetic compatibility directives.
• Weight, 0.8 kg, compact enough for marine panels or small off-grid enclosures.
• Fast response, switches quickly enough to limit interruption to connected loads.

How it works

The Filax 2 monitors the primary AC source continuously. If that source fails or drifts outside acceptable parameters, the unit switches the load to the secondary source automatically. The transfer is quick enough to protect equipment that cannot tolerate long supply gaps.

Because it supports both 110V/50Hz and 120V/60Hz, it can be used in systems built to North American or other international standards, and in mixed-voltage setups. That makes it a sensible choice for marine vessels, mobile installations and off-grid sites that connect to different shore power or generator supplies depending on location.

Applications

• Off-grid solar systems switching automatically between inverter output and a backup generator or shore power.
• Marine installations switching between an onboard inverter and marina shore power.
• Mobile and vehicle-based power systems with dual AC source inputs.
• Backup power setups in commercial or light industrial settings where load continuity is needed.
• Installations operating on 110V or 120V AC standards.

What's in the box

• 1 x Victron Filax 2 Transfer Switch (110V/50Hz to 120V/60Hz)

Installation notes

This unit involves connections to live AC sources and should be installed by a qualified electrician familiar with the relevant wiring regulations. In the UK that means compliance with BS 7671. Check that upstream fusing and isolation are correctly rated before connecting to a generator or inverter feeding critical loads. This variant is rated for 110V/50Hz and 120V/60Hz; do not connect it to 230V/50Hz mains without confirming compatibility with Victron's published specification for the correct variant.